Do you think bitcoin gold value will rise to bitcoin value
No, i only read the github comment but apparently the feature is not ready and they are just starting to make it. There's no way people will trust the group or altcoin that doesn't have the proper code, there's too much risk involved. People want btg because it's a free airdrops for those who owns bitcoin and they will sell it for some money.
Even if there is a development on the part of the bitcoin gold, it would be just like any other crypto-currency out the market that would just served as an option for transactions, investment and a form of trading in the market. Because bitcoin is a well developed crypto-currency that served as the main currency or value provider in the part of all form of crypto-currency so having a development on the part of bitcoin gold could also be a vital part for bitcoin development and growth in the future.